Works today. Google Drive works today. Back documents up from Settings › Cloud Sync, and bring Drive files into a team workspace from that workspace's Connectors tab. DocFila asks only for Google's drive.file permission, so it can see files it created and files you pick — not the rest of your Drive.
Connect Drive in Settings › Cloud Sync, or open a workspace and choose Connectors. DocFila does not watch your Drive for changes.
There is no single Integrations screen. Cloud storage is in Settings › Cloud Sync and in a team workspace's Connectors tab. Slack, Gmail and Salesforce sign-in is in an organization's Settings. Accounting exports are in FinFlow › Reports. Outbound webhooks are an action in Tools › Workflows.
Keep going with the document workflow that matches this page. Open the tool you need, then finish the file in DocFila.